More Options?

1. If you drive in a lot of stop and go traffic, you could make your build your truck into a hydraulic hybrid for some fuel savings. Haven't seen any aftermarket kits yet, but it will be interesting if Eaton sells their HLA as an aftermarket kit.

2. Brew & Distill your own ethanol or butanol. Sites like www.ethanolstill.com have stills and plans for sale and several people on here seem to do it. Running ethanol would also take some mods to your truck.

-Jim